Start Up - ProMinent Sigma 3 Basic Operating Instructions Manual

Start up

9 Start up
Safety information
46
WARNING!
ATEX pumps in areas at risk from explosion
– Make sure that a suitably competent person checks
whether the appropriate installation information from
the "Installation " chapter has been implemented
correctly.
– Make sure that a "recognised competent person"
checks the electrical installation and in particular the
intrinsically safe power circuits.
– Set the opening pressure of the relief valve to a
maximum of no more than 1.5 times the nominal
pressure of the pump.
WARNING!
ATEX pumps in areas at risk from explosion
The ignition temperature is reduced significantly below
the ignition temperature at atmospheric pressure due to
compression with the discharge stroke of the possibly
ignitable vapour-air mixture.
– Do not allow it to run dry.
WARNING!
Only motors with a frequency converter: Danger of elec‐
tric shock
The danger of electric shock remains for 3 minutes after
the mains voltage has been switched off on conducting
parts of the motor with an integrated frequency converter
and on the lines themselves.
– After switching off, allow the device to stand for 3
minutes before opening the terminal box.
CAUTION!
Warning of personal injury and material damage
The metering pump may only be operated by trained
personnel. The operator is responsible for ensuring that
under the given operating conditions (pressure, tempera‐
ture, corrosiveness, etc.) danger to the operating per‐
sonnel is avoided by use of appropriate accident preven‐
tion measures.
CAUTION!
Only motors with a frequency converter: The motor can
be damaged
The input current limiter could be damaged if a motor
with an integrated frequency converter is restarted within
3 minutes of the mains voltage being switched off.
– After switching off, allow the device to stand for at
least 3 minutes before restarting.